48K views | Serious Mass is the ultimate in weight gain formulas. With 1,274 calories per serving and 50 grams of protein for muscle recovery support, this instantized powder makes the idea post-workout and between meals shake for sizing up your goals. | Optimum Nutrition | Facebook
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@optimumnutrition Max calories for max results. Serious Mass can help reach your weight gain goals. | Optimum Nutrition
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Serious Mass is the ultimate in weight gain formulas. With 1,274 calories per serving and 50 grams of protein for muscle recovery support, this instantized powder makes the idea post-workout and between meals shake for sizing up your goals. | Optimum Nutrition
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1.4K views | We care about how you size up to your goals and Serious Mass is no exception. With 1,250 calories, 50 grams of protein to support muscle recovery and 250+ grams of carbohydrates to help replenish muscle glygogen, this high-calorie, high-protein gainer has a lot to offer. When you're serious about sizing up your physique, get Serious Mass. #SeriousMass #OptimumNutrition | Optimum Nutrition | Facebook
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